Question

please tell q2 and 4 in this

Answer 1

1. 2.64 is added So next term will be $\sqrt{112}$

2.7*6*5*4*3*2*1+5=5*(7*6*4*3*2*1+1)

where both the factors are whole number so 7*6*5*4*3*2*1+5is composite numbers because it is divisible by 5.